package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.List;

@Slf4j
@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // TODO 后期需要进行md5加密，然后再进行比对
        //将前端传入的密码进行md5加密处理
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        log.info("md5========={}", password);      //md5日志
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /**
     * 新增员工
     * @param employeeDTO
     */
    public void add(EmployeeDTO employeeDTO){
        Employee employee = new Employee();

        //对象属性拷贝
        BeanUtils.copyProperties(employeeDTO, employee);

        //设置状态，默认正常状态 1正常
        employee.setStatus(StatusConstant.ENABLE);

        //设置账号创建时间和修改时间
        employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());

        //设置默认密码123456，需要进行md5加密处理
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));

        //设置修改人id，创建人id
        //TODO 获取当前登录用户的id
        employee.setCreateUser(BaseContext.getCurrentId());
        employee.setUpdateUser(BaseContext.getCurrentId());

        log.info("新增员工，员工信息：{}", employee);

        employeeMapper.insert(employee);

    }

    /**
     * 分页查询员工信息
     * @param employeePageQueryDTO
     * @return
     */
    @Override
    public PageResult findEmp(EmployeePageQueryDTO employeePageQueryDTO) {
        //开启分页
        PageHelper.startPage(employeePageQueryDTO.getPage(), employeePageQueryDTO.getPageSize());

        //查询员工数据
        Page<Employee> page = employeeMapper.findEmpByName(employeePageQueryDTO);

        log.info("分页查询员工信息：{}", page);

        //获取数据总条数
        Long total = page.getTotal();
        //获取所有数据对象
        List<Employee> records = page.getResult();

        return new PageResult(total, records);
    }

    /**
     * 启用禁用员工账号
     * @param status
     * @param id
     */
    @Override
    public void statOrstop(Integer status, Long id) {
        Employee employee = new Employee();
        employee.setStatus(status);
        employee.setId(id);
        employeeMapper.updateStatus(employee);
    }

    /**
     * 根据id查询员工信息
     * @param id
     * @return
     */
    @Override
    public Employee selectEmpById(Long id) {
        Employee employee = employeeMapper.selectEmpById(id);
        return employee;
    }

    /**
     * 编辑员工信息
     * @param employeeDTO
     */
    @Override
    public void update(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        //对象属性拷贝
        BeanUtils.copyProperties(employeeDTO, employee);
        employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(BaseContext.getCurrentId());

        employeeMapper.updateEmpById(employee);
    }

    ;

}
